<template>
  <div class="app">
    <h3>我是App组件</h3>
    <Child />
  </div>
</template>
<script>
import Child from '@/components/Child'
export default {
  name: 'App',
  components: {
    Child,
  },
}
</script>
<style>
.app {
  background-color: gray;
  padding: 10px;
}
</style>